Light-emitting apparatus, method of manufacturing light-emitting apparatus, image forming apparatus, and electronic apparatus

Abstract

There is provided a light-emitting apparatus formed by attaching a device substrate where light-emitting device is formed and a sealing substrate which seals the device substrate through a sealing material and sealing the light-emitting device between the device substrate and the sealing substrate through the sealing material, wherein the sealing material includes a first sealing material and a second sealing material, wherein the first sealing material is formed to surround the light-emitting device between the device substrate and the sealing substrate and to have a sealing hole portion formed by not disposing the first sealing material, so that the first sealing material is discontinuous, wherein the sealing hole portion of the first sealing material is closed with the second sealing material, so that the second sealing material and the first sealing material constitute a ring-shaped sealing member, and wherein the first sealing material is provided with guide portions which are formed to be continuous with at least one side where the sealing hole portion is formed and to extend to an inner surface of the device substrate without being covered with the sealing substrate so as to be exposed.

1. A light-emitting apparatus comprising:
 a device substrate; 
 a sealing substrate; 
 a light-emitting device attached to the device substrate and configured between the device substrate and the sealing substrate; 
 a first sealing material disposed between the device substrate and the sealing substrate, the first sealing material extending substantially around the light-emitting device except at a sealing hole portion; 
 at least one guide portion disposed along the first sealing material, the at least one guide portion continuously disposed with at least one side of the sealing hole portion, the at least one guide portion extending to an inner surface of the device substrate; and 
 a second sealing material disposed along the at least one guide portion and sealing the sealing hole portion, the second sealing material and the first sealing material forming a ring-shaped sealing member around the light-emitting device between the device substrate and the sealing substrate such that the inner surface of the device substrate is disposed within the ring-shaped member. 
 
   
   
     2. The light-emitting apparatus according to  claim 1 , wherein the at least one guide portion includes two guide portions continuously disposed on the device substrate on each side of the sealing hole portion. 
   
   
     3. The light-emitting apparatus according to  claim 2 , wherein the two guide portions are disposed apart from each other on the device substrate such that an interval is formed between the two guide portions, the interval enlarging from a side of the sealing hole portion to a position more distant from the inner surface of the device substrate. 
   
   
     4. The light-emitting apparatus according to  claim 3 , wherein the two guide portions are configured at an angle relative to one another, the angle being in the range of 5° to 170°. 
   
   
     5. The light-emitting apparatus according to  claim 1 , the first sealing material further including a width portion disposed near the sealing hole portion, a width of the width portion being wider than a width of the first sealing material disposed other than at the width portion. 
   
   
     6. The light-emitting apparatus according to  claim 1 , further including a sealing material extension portion, the sealing material extension portion having a concave-shape extending within the ring-shaped sealing member. 
   
   
     7. The light-emitting apparatus according to  claim 1 , wherein the sealing hole portion is disposed at side end portions of the device substrate and the sealing substrate. 
   
   
     8. An image forming apparatus having the light-emitting apparatus according to  claim 1  as an exposure unit.